Overview
The ARRMA 4985 Motor Heatsink V2 is an essential cooling accessory designed specifically for high-performance brushless RC cars. Whether you're running an RC car in the UK or racing at competitive events, motor heat management is critical for maintaining peak performance and extending the lifespan of your brushless motor. This V2 heatsink is engineered to dissipate motor heat efficiently, allowing your motor to run cooler during extended bashing sessions or intense competitive racing. If you own an ARRMA 1/7 LIMITLESS 8S, this heatsink is the perfect upgrade to keep your brushless motor operating at optimal temperatures.
Motor heatsinks are an often-overlooked but highly effective cooling solution for RC enthusiasts. When brushless motors work hard—whether on street speed runs or challenging terrain—they generate significant heat that can degrade performance and reduce motor lifespan. The ARRMA 4985 Motor Heatsink V2 mounts directly onto your motor, providing active cooling through improved heat dissipation. This simple yet effective accessory is popular among UK RC hobbyists, weekend bashers, and competitive racers alike who demand the best performance from their brushless RC cars.
Designed as a genuine ARRMA replacement part, the 4985 Motor Heatsink V2 offers OEM quality and perfect fitment with compatible models. Whether you're looking to extend motor life, maintain consistent power delivery in hot conditions, or simply want to optimise your RC car setup, this heatsink is a worthwhile investment for any serious RC driver in the UK.
Key Features
- Brushless Motor Cooling — This heatsink is specifically designed to dissipate heat from brushless motors, keeping temperatures lower during sustained high-power running and helping to maintain consistent motor performance even in hot weather or during lengthy racing sessions.
- V2 Design — The V2 designation indicates this is an improved second-generation heatsink that benefits from design refinements and optimised cooling geometry compared to the original version, offering better heat transfer and reliability.
- OEM ARRMA Part — As a genuine ARRMA replacement component, this heatsink is engineered to exact specifications for perfect fitment and compatibility with designated ARRMA RC models, ensuring no modifications are needed for installation.
- Extended Motor Lifespan — By reducing motor operating temperatures, this heatsink helps prevent thermal stress on brushless motor components, potentially extending the working life of your motor and maintaining performance consistency over time.
- Easy Installation — Designed as a direct bolt-on accessory, the 4985 Motor Heatsink V2 integrates seamlessly with compatible ARRMA models without requiring complex modifications or adjustments to your RC car's setup.
- Improved Performance Stability — Cooler motor temperatures translate to more stable voltage delivery and consistent power output, which is especially important for maintaining predictable handling and acceleration characteristics during competitive racing or aggressive driving.
Technical Performance
The ARRMA 4985 Motor Heatsink V2 is a precision-engineered cooling solution optimised for the demanding requirements of modern brushless RC cars. Brushless motors generate considerably more heat than their brushed counterparts, particularly when running on high-voltage LiPo batteries such as the 8S packs commonly used in ARRMA 1/7-scale vehicles. Motor temperature control is essential for maintaining the integrity of winding insulation, maximising power delivery, and preventing performance degradation during extended running periods. The V2 heatsink features improved thermal conductivity and optimised surface area to dissipate heat more effectively than previous generations. This is particularly valuable for UK RC hobbyists operating in varying weather conditions, as motor cooling becomes increasingly important during summer racing or extended bashing sessions. The heatsink is engineered to mount directly onto the motor can, allowing heat to transfer away from critical motor components. For owners of the ARRMA 1/7 LIMITLESS 8S AVC 4X4 RTR BLX in either White/Blue or Red/Black colour options, this heatsink provides OEM-quality cooling performance without compromising motor accessibility or requiring complex installation procedures.
What's in the Box
- ARRMA 4985 Motor Heatsink V2
Frequently Asked Questions
- Which ARRMA RC cars is the 4985 Motor Heatsink V2 compatible with? — This heatsink is designed for the ARRMA 1/7 LIMITLESS 8S AVC 4X4 RTR BLX, available in both White/Blue and Red/Black colour schemes. Before purchasing, always verify that your specific ARRMA model matches one of these variants to ensure proper fitment and performance.
- Why do I need a motor heatsink for my brushless RC car? — Brushless motors operating on high-voltage batteries like 8S LiPo packs generate substantial heat during extended running. A motor heatsink helps dissipate this heat, preventing temperature-related performance loss, extending motor lifespan, and maintaining consistent power delivery during competitive racing or weekend bashing sessions.
- Is the motor heatsink easy to install? — Yes, the ARRMA 4985 Motor Heatsink V2 is designed as a direct bolt-on accessory that integrates seamlessly with compatible ARRMA models. Installation requires no complex modifications or specialised tools, making it accessible for RC enthusiasts of all experience levels.
- Will this heatsink improve my RC car's speed? — While the heatsink itself doesn't increase top speed, it helps maintain consistent power delivery and prevents thermal throttling that can occur when motors overheat. By keeping your motor cooler, you'll maintain more stable acceleration and predictable handling characteristics, particularly valuable during competitive racing.
- What is the difference between the V2 and original heatsink? — The V2 designation indicates this is a second-generation design that incorporates refinements in cooling geometry and thermal conductivity compared to the original version, resulting in improved heat dissipation and more effective motor temperature management.
Why Buy from RC Model Shop?
RC Model Shop is a trusted UK RC retailer and authorised dealer for all the brands we stock, including Traxxas, ARRMA, Losi, FTX, Hobbywing, Spektrum and more. Based in Walsall, we have a physical store where customers are welcome to come in, view products and purchase in store. Whether you are a seasoned competitor, a weekend basher, or just discovering the world of RC for the first time, our team of experienced RC enthusiasts is here to help you find the perfect setup and provide ongoing support. Order the ARRMA 4985 Motor Heatsink V2 Z-ARA-2803 today with confidence, knowing you are buying from an authorised retailer with genuine products, expert knowledge and a commitment to customer satisfaction. Shop online or visit us in Walsall — we look forward to helping you get the most out of your RC experience.
We want to make sure your delivery goes smoothly, so here are some important details about our service:
- For orders above £120, we offer delivery to most mainland UK addresses. For orders under £120, we can still deliver to Northern Ireland and the outlying isles, as long as the item can be sent by Royal Mail, weighs less than 30kg, and fits within 61cm × 46cm × 46cm. Some highland and remote areas may carry an extra delivery charge as couriers often apply surcharges in these locations. If you live in one of these areas, feel free to contact us before ordering so we can confirm the delivery options and costs for you.
- Most of our products include delivery in the price. If your order is under £90, a small delivery fee will apply but do not worry this will always be clearly shown at checkout before you complete your purchase.
- Depending on what you choose at checkout, your order will usually be delivered either the next working day or within 2 working days. For next day delivery please place your order before 2:00pm. Orders are dispatched Monday to Friday only. Some items may take a little longer and if that is the case we will always show the expected delivery time on the product page.
- If your order includes items with different dispatch times we will normally wait and send everything together once all items are in stock. If one of the items is going to take a while we will give you the choice either wait for everything to arrive or let us send the available items now and deliver the rest later. It is up to you.
- We use trusted delivery partners to make sure your order gets to you safely and on time. We use DPD for next working day deliveries and Royal Mail for the 2 day option.
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- If a product is marked as "Dispatched within 3 working days" delivery usually takes around 3 to 5 working days from when your order is placed.
- For customers in Inverness and other parts of the Scottish Highlands deliveries can take up to 2 working days even if you select next day delivery as couriers do not currently offer a guaranteed next day service to those areas.
